Dasduino LITE MG995 servo not moving when powered

TECHNICAL SUPPORT NULA Development Boards
1

Customer:

I’m planning a project to make an automatically opening box and would like your help and opinion.

Something like this: Automatically Opening / Closing a Box With a Linear Actuator and Arduino : 5 Steps (with Pictures) - Instructables

My project would consist of a similar box with an LCD display mounted on top, 2 buttons, and potentially several LEDs, with the controller on the inside along with the motor. I’m considering this component configuration and would like help:

1x LED display – 000061 or another you recommend (333100)

1x motor – 109042 or 101246 – it needs to open the box, I assume choosing the first one gives me the add-ons needed for such movements?

1x controller – 333225 – I think Dasduino LITE (ATTiny1604) will be sufficient – with male header – and I’m curious how long the USB-C cable is?

1x power supply – 100717

5x LED diodes – 100105 (do I need a special voltage regulator to light a specific color – given that the voltages are lower, or does the controller have this capability?)

2x buttons – 101111

If I forgot something, please suggest it.

Original message (Croatian)

imam u planu napraviti projektić za otvaranje kutijice i molio bih za Vašu pomoć / mišljenje.

Nešto na foru ovoga:

Automatically Opening / Closing a Box With a Linear Actuator and Arduino : 5 Steps (with Pictures) - Instructables

Moj projektić bi se sastojao od slične kutije na koju bi s gornje strane ugradio LCD display, 2 tipkala i potencijalno nekoliko LED-ica, a kontroler bi se nalazio s unutarnje strane, kao i motor… po nekoj konfiguraciji išao bih s ovim komponentama pa bih molio pomoć:

1x LED display – 000061 ili neki drugi koji preporučate (333100)

1x motorić – 109042 ili 101246 – trebao bi otvarati tu kutiju, pretpostavljam da izbor prvoga mi omogućava dodatke koji su potrebno za takve kretnje?

1x kontroler – 333225 – mislim da će Dasduino LITE (ATTiny1604) biti dovoljan – s muškim headerom – i zanima me koliko je dugačak USB-C kabel?

1x napajanje – 100717

5x LED diode – 100105 (treba li mi posebni regulator napona kako bi palio određenu boju – s obzirom da su naponi niži ili kontroler ima tu mogućnost?)

2x tipkala – 101111

Ukoliko sma nešto zaboravio, molim sugestiju.

Originally submitted via email support on 13 October 2024. Migrated to the forum for community visibility.

2

Soldered Support:

For the LCD, I recommend using one that can be controlled over an easyC cable instead: 16x2 I2C LCD Display White on Blue - Qwiic Compatible – Soldered Electronics or for a more compact screen, this one. I recommend the MG995 Servo because it’s stronger, and yes, it comes with those add-ons. It can be driven directly with the Dasduino. Dasduino LITE is great for this application and has an easyC connector so the LCD or OLED can be easily connected. The USB-C cable that comes with the Dasduino is ~1m. The power supply is fine. The LED diodes are okay, but you need to put a resistor of about 300 ohms on the anode lead for each one to limit the current. Here’s a short article on how to connect “common anode RGB LED”: Arduino RGB LED Guide: Easy Setup and Code Examples The buttons are fine.

The Dasduino can be programmed and then powered only via USB-C power, opening and closing the box. Just preferably use a box that isn’t too heavy so the servo can open and close it easily.

Original message (Croatian)

super projekt, ovdje smo da pomognemo :slight_smile:

Kao prvo predlažem da koristiš što lakšu kutiju kako motor ne bi imao problema sa otvaranjem i zatvaranjem. Idemo redom vidjeti komponente:
Taj LCD je super, samo što zahtjeva puno pinova za kontrolu. Predlažem ovaj koji se može kontrolirati samo preko easyC kablića: 16x2 I2C LCD Display White on Blue - Qwiic Compatible – Soldered Electronics . Ili taj ili za kompaktniji ekran ovaj Preporučujem MG995 Servo jer je jači, i da, dolazi s tim dodatcima. Može se pogoniti samo s Dasduinom Dasduino LITE je super za tu primjenu, i ima easyC konektor pa se lako može spojiti LCD ili onaj OLED koji sam linkao. USB-C kabel koji dolazi s Dasduinom je ~1m Napajanje je OK LED diode su okej, samo treba staviti otpornik od oko 300 ohma na vod za svaku anodu kako bi se ograničila struja. Evo kratkog članka koji sadržava kako spojiti “common anode RGB LED” Arduino RGB LED Guide: Easy Setup and Code Examples Tipkala su OK
To je sve :slight_smile: i da, Dasduino se može isprogramirati i onda napajati samo sa napajanjem preko USB-C, i otvarati i zatvarati kutiju, samo je poželjno koristiti kutiju koja nije pre teška kako bi Servo mogao to otvoriti i zatvoriti lako.

Nadam se da to odgovara na sva pitanja :slight_smile:

3

Customer:

One more thing - as far as I can see, the motor can go directly to the controller, I don’t need any kind of driver, is that right?

Original message (Croatian)

I još jedna stvar,
koliko vidim, motorić može ići direktno na kontroler, nije mi potreban nikakav drive, je li tako?
Hvala.
[name removed], mag. ing. el.

4

Soldered Support:

Yes, that’s correct. For the motor, no driver is needed, just the Servo software library that comes with Arduino. Here’s the cable for connecting between Dasduino and OLED: https://soldered.com/product/easyc-cable-10cm/ (there are also cables of other lengths)

If you want, you can also solder the pins of Dasduino LITE that are for I2C and that OLED for an even better connection (the pinout of Dasduino LITE is on the product page).

Original message (Croatian)

naravno, ovo je kablić za spoj između Dasduina i OLED-a: https://soldered.com/product/easyc-cable-10cm/ (postoje i kablići druge duljine)
Ako budeš htio možeš i za još bolji spoj zalemiti pinove Dasduino LITE-a koji su za I2C i tog OLEDa (pinout Dasduino LITE-a je na stranici od proizvoda)

Za motorić, tako je, nije potreban nikakav driver, samo Servo software library koji dolazi s Arduinom.

5

Customer:

I’ve started the project and run into a problem. While testing the MG995 servo drive (without load, just to turn it), I’ve hit a dead end and don’t know what to do, so I’m asking for help. I basically used the example code (in a text file, I commented out my attempts), but when I download the project to the Dasduino nothing happens. When I reset the power, I hear the motor start to work, but no movement is visible. I connected the red wire to VCC, brown to GND, and orange to PA6. Is it possible that it’s not getting enough current to start so the Dasduino (Lite) shuts down to avoid damage? I tried measuring the voltage between VCC and GND and it shows 4.85V, and when it powers on I don’t see any drop since I have a regular multimeter. I’m guessing the solution is to have separate power for the motor?

Original message (Croatian)

započeo sam s projektom i naišao na problem.
Prilikom testiranja servo drive-a MG995 (bez tereta, samo da ga zavrtim) došao sam do slijepe ulice i ne znam što činiti pa bih molio za pomoć. Dakle, bazno sam iskoristio primjer koda (u tekstualnoj datoteci, zakomentirao sam pokušaje), no prilikom downloada projekta na Dasduino ne događa se ništa, dok kada resetiram napajanje čuje se kako motor krene raditi, ali ne vidi se pomak). Crvenu žicu sam spojio na VCC, smeđu na GND i narančastu na PA6. Je li moguće da ne dobije dovoljno struje za pokretanje pa Dasduino (Lite) izbaci da se ne bi oštetio? Pokušao sam mjeriti napon između VCC i GND i pokazuje 4,85V → a prilikom paljenja ne vidim nikakav propad pošto imam običan multimetar. Pretpostavljam da je rješenje onda imati odvojeno napajanje za motor?

Attachment omitted in migration: MG995.txt

6

Soldered Support:

There shouldn’t be a problem. I think it’s an issue with pin naming. Can you write out PA6?

I just tested compiling a test sketch like this and it worked:

Original message (Croatian)

ne bi trebalo biti problema, mislim da je riječ o obilježavanju pina, možeš li napisati PA6?

Ja sam sad probao tako testni sketch compileati i radilo je:

Attachment omitted in migration: image.png