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Bringing up new boards

A project log for 900 MHz radio

Hope RF module + Atmega 328

sophi-kravitzSophi Kravitz 12/24/2020 at 00:262 Comments

1/30/2021 - bringing up boards notes

Testing radios today:

Name/ Port/ Atmega pin/ Arduino IDE pin

BATTERY LIFE

PINOUTS

//    digitalWrite(0)         //--> D0
//    digitalWrite(1)         //--> D1
//    digitalWrite(2)         //--> D2
//    digitalWrite(3,LOW);    //--> D3
//    digitalWrite(4,LOW);    //--> D4
//    digitalWrite(5,LOW);    //--> D5
//    digitalWrite(6,LOW);    //--> D6
//    digitalWrite(7,LOW);    //--> D7
//    digitalWrite(8,HIGH);   //--> B0 
//    digitalWrite(9,HIGH);   //--> B1
//    digitalWrite(10,HIGH);  //--> B2 SSO
//    digitalWrite(11,HIGH);  //--> B3 MOSI
//    digitalWrite(12,HIGH);  //--> B4 MISO
//    digitalWrite(13,HIGH);  //--> B5 SCK
//    digitalWrite(14,LOW);   //--> C0
//    digitalWrite(15,LOW);   //--> C1
//    digitalWrite(16,LOW);   //--> C2 
//    digitalWrite(17,LOW);   //--> C3
//    digitalWrite(18,LOW);   //--> XX
//    digitalWrite(19,LOW);   //--> XX
//    digitalWrite(20,LOW);   //--> XX
//    digitalWrite(21,LOW);   //--> XX
//    digitalWrite(22,LOW);   //--> XX
//    digitalWrite(23,LOW);   //--> E0
//    digitalWrite(24,LOW);   //--> E1
//    pinMode(A2, INPUT_PULLUP); //-->25 (ALSO C2)

****************************

I received new PCBs early December, getting around to populating and bringing them up now. Here are the notes:

1. SDO/ SDI routed incorrectly everywhere, reversed on the radio and reversed on the programming connector.

2. LEDs are BRIGHT with a 100 ohm resistor. Maybe we'll go with less bright? TBD.

R13 & 14 are 100 ohm, the rest are 124 ohm

3.  AA battery holder is bigger than the footprint was designed for. The oscillator and the on/off switch interfere. Not a show stopper here, but should be fixed for the next rev.

4. For battery life, we're using a AA 1.5V battery. There's a voltage divider measuring the battery which gives an input to pin 19: ADC6/ E2. 

V(out) = V(in)*(R2/(R1+R2))

Discussions

tetoalaamry wrote 01/31/2021 at 21:38 point

I need seen everything 

  Are you sure? yes | no

EK wrote 01/31/2021 at 00:14 point

"Trick: open -n -a EAGLE in terminal to see more than one instance"

Sweet, Just learned this!! Thank yooou!!!

  Are you sure? yes | no