ActivityBot tutorials with a PropBOE?

David Betz

Can the ActivityBot tutorials be used with a robot that has a PropBOE rather than an ActivityBoard? Are the two similar enough? If not, are there instructions somewhere describing what needs to be changed to use a PropBOE in place of an ActivityBoard? I was under the impression that the ActivityBoard was basically just a stripped down PropBOE. Is that true?

Duane Degn

I'll quote what I wrote in the other thread so other don't have to repeat it.

Duane Degn wrote: »

The PropBOE's ADC chip is different than the one used on the ActivityBoard so any code using the ADC would need to be changed. The PropBOE's ADC is I2C and the ActivityBoard's ADC is SPI.

I'm not sure what other differences there are which would cause you trouble when using a PropBOE instead of an ActivityBoard.

David Betz

Duane Degn wrote: »

I'll quote what I wrote in the other thread so other don't have to repeat it.



I'm not sure what other differences there are which would cause you trouble when using a PropBOE instead of an ActivityBoard.

The encoders don't use the ADC I assume so I might still be able to do us the abdrive functions. I'll have to try it later. Thanks!

David Betz

Looks like there are other changes as well. For one thing, the servo connectors are connected to different Propeller pins so the scheme that the ActivityBot uses for adding 20k resistors to the encoders won't work since P16 and P17 don't appear on the header next to the breadboard. Looks like it will be easier to get an ActivityBoard if I'm going to follow the ActivityBot tutorials.

Genetix

David, these are the differences between the Prop BOE and Prop AB according to the documentation:
AB uses P12-P17 for servos while the BOE uses P14-P19
AB ADC is P18-P21 while BOE ADC is P28-P29 (Same as EEPROM)
P20 and P21 of the BOE are used for the Microphone.

AB uses ADC124S021 while BOE uses AD7993-1
AB uses FT231X while BOE uses FT232R
AB uses LD29150PT50R while BOE uses LM3478

Breadboard connections (P0-P15), MicroSD (P22-P25), Audio (P26-P27), EEPROM (P28-P29), and Serial to PC (P30-P31) are all the same.

David Betz

Genetix wrote: »

David, these are the differences between the Prop BOE and Prop AB according to the documentation:
AB uses P12-P17 for servos while the BOE uses P14-P19
AB ADC is P18-P21 while BOE ADC is P28-P29 (Same as EEPROM)
P20 and P21 of the BOE are used for the Microphone.

AB uses ADC124S021 while BOE uses AD7993-1
AB uses FT231X while BOE uses FT232R
AB uses LD29150PT50R while BOE uses LM3478

Breadboard connections (P0-P15), MicroSD (P22-P25), Audio (P26-P27), EEPROM (P28-P29), and Serial to PC (P30-P31) are all the same.

Thanks for the information. It still looks like it will be difficult to connect P16 and P17 (the ones connected to the encoders) to 3.3v since those pins don't exist on the PropBOE header.