PiGRRL

hi. i'm thinking about building a PiGRRL, but i have a couple of questions about the components, -Screen 2.8" PiTFT Plus, can i use a different screen? i dont want a touch screen and 35$ is a bit too much, any advice? -charger PowerBoost 1000 Charger -> is there a cheaper board that can do the same? can i use these? https://www.amazon.it/AZDelivery-%E2%AD%90%E2%AD%90%E2%AD%90%E2%AD%90%E2%AD%90-TP4056-regolatore-carica/dp/B07D2G345P/ref=sr_1_8?__mk_it_IT=%C3%85M%C3%85%C5%BD%C3%95%C3%91&crid=1NXV1XAO0RPEC&keywords=PowerBoost%2B1000%2BCharger&qid=1693485926&sprefix=powerboost%2B1000%2Bcharger%2Caps%2C155&sr=8-8&th=1 -2500mAh battery, the adviced one is only 4.2 volts at peek, im not sure it can power the pi quite well, what do you suggest? i would be able to redesign the printed parts to fit the new components in case

- Screen: Not really but Adafruit is quality. - Charger: TP4056 is OK - Battery: Is OK but then you need a DC/DC that can convert the Battery voltage to a stable 5v for your Raspberry Pi, look here for inspiration https://www.circuitbasics.com/how-to-power-your-raspberry-pi-with-a-lithium-battery/

And a warning: You should never use the TP4056 as a charger and as a load driver at the same time. When charging the battery, switch off the load, and when loading the battery, switch off the charger. Alternatively use a PMOSFET, a resistor and a Schottky diode See https://www.best-microcontroller-projects.com/tp4056-page2.html

Thanks