Make sure to support and order from @Jason_Coon These are perfect. https://www.tindie.com/products/jasoncoon/wemos-d1-mini-esp8266-level-shifter-mini-shield/
ordered. not sure if I’ll use it, but can’t hurt to have given that I’ve already bought a pile of old Wemos D1 with 4MB of RAM just in case (the new models only have 1MB, not enough for SPIFS)