el siguiente modelo es una base para heltec v4 montado en una carcasa todo en uno con los siguientes componentes 

gps

https://es.aliexpress.com/item/1005007139884361.html?invitationCode=Y3FiNUZsMTdzU0pOZHIrWEd2UnJrcGFiRkhHUk5TdEdvMnMreXhZRExvbWVQemFTZUJrNWVWT0s1MU1hdTAyWg&srcSns=sns_WhatsApp&sourceType=1&spreadType=socialShare&social_params=22137603994&bizType=ProductDetail&spreadCode=Y3FiNUZsMTdzU0pOZHIrWEd2UnJrcGFiRkhHUk5TdEdvMnMreXhZRExvbWVQemFTZUJrNWVWT0s1MU1hdTAyWg&aff_fcid=bf50e9de635b4d15ab484d8c14745804-1782956811288-04231-_mKMzC2B&tt=MG&aff_fsk=_mKMzC2B&aff_platform=default&sk=_mKMzC2B&aff_trace_key=bf50e9de635b4d15ab484d8c14745804-1782956811288-04231-_mKMzC2B&shareId=22137603994&businessType=ProductDetail&platform=AE&terminal_id=19f30e32638140dd8280438827373024&afSmartRedirect=y

bateria

https://es.aliexpress.com/item/1005008218024646.html?invitationCode=Y3FiNUZsMTdzU0tkUmN3aGs4RVhYSmFiRkhHUk5TdEdvMnMreXhZRExvbWVQemFTZUJrNWVWT0s1MU1hdTAyWg&srcSns=sns_WhatsApp&sourceType=1&spreadType=socialShare&social_params=22134042865&bizType=ProductDetail&spreadCode=Y3FiNUZsMTdzU0tkUmN3aGs4RVhYSmFiRkhHUk5TdEdvMnMreXhZRExvbWVQemFTZUJrNWVWT0s1MU1hdTAyWg&aff_fcid=ed2f822a00f0452a8b49459a4861ff0f-1782957056671-03997-_mMRlyv5&tt=MG&aff_fsk=_mMRlyv5&aff_platform=default&sk=_mMRlyv5&aff_trace_key=ed2f822a00f0452a8b49459a4861ff0f-1782957056671-03997-_mMRlyv5&shareId=22134042865&businessType=ProductDetail&platform=AE&terminal_id=19f30e32638140dd8280438827373024&afSmartRedirect=y

heltec v4

https://es.aliexpress.com/item/1005010730251646.html?invitationCode=Y3FiNUZsMTdzU0tIbFgzeGNaRk9lSmFiRkhHUk5TdEdvMnMreXhZRExvbWVQemFTZUJrNWVWT0s1MU1hdTAyWg&srcSns=sns_WhatsApp&sourceType=1&spreadType=socialShare&social_params=22134042958&bizType=ProductDetail&spreadCode=Y3FiNUZsMTdzU0tIbFgzeGNaRk9lSmFiRkhHUk5TdEdvMnMreXhZRExvbWVQemFTZUJrNWVWT0s1MU1hdTAyWg&aff_fcid=2d1b41df34d24c219e9d07da6389e66c-1782957099126-02625-_mtc0aDV&tt=MG&aff_fsk=_mtc0aDV&aff_platform=default&sk=_mtc0aDV&aff_trace_key=2d1b41df34d24c219e9d07da6389e66c-1782957099126-02625-_mtc0aDV&shareId=22134042958&businessType=ProductDetail&platform=AE&terminal_id=19f30e32638140dd8280438827373024&afSmartRedirect=y